howto/Getting-Started.md
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@@ -250,7 +250,8 @@ source: DN42
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#### DNS and Domain Registration
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*(Optional)*
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-To register a domain name, create a `dns` object in the data/dns directory.
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+To register a domain name, create a `dns` object in the data/dns directory.
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+Domain names and nserver attributes must be lowercase.
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example: data/dns/foo.dn42
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```